Population ecology of Paepalanthus polyanthus (Bong.) Kunth: temporal variation in the pattern of spatial distribution
The temporal variation in density and pattern of spatial distribution of Paepalanthus polyanthus (BONG.) Kunth (Eriocaulaceae) were evaluated at a determinate sand dune. This study was carried out over a period of five years, at three permanent plots of 25m2 in a sand dune slack at Joaquina Beach, F...
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| Format: | Article |
| Language: | English |
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Universidade Federal de Santa Catarina
2004-11-01
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| Series: | Biotemas |
| Subjects: | |
| Online Access: | http://www.biotemas.ufsc.br/volumes/pdf/volume172/a2.pdf |
| _version_ | 1811253287204159488 |
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| author | Tânia Tarabini Castellani Karla Zanenga Scherer |
| author_facet | Tânia Tarabini Castellani Karla Zanenga Scherer |
| author_sort | Tânia Tarabini Castellani |
| collection | DOAJ |
| description | The temporal variation in density and pattern of spatial distribution of Paepalanthus polyanthus (BONG.) Kunth (Eriocaulaceae) were evaluated at a determinate sand dune. This study was carried out over a period of five years, at three permanent plots of 25m2 in a sand dune slack at Joaquina Beach, Florianópolis, SC, Brazil. There were strong density fluctuations throughout these years. In areas 1, 2 and 3, the densities changed from 10.4, 2.2 and 1.8 plants/m2 in December 1986 to 75.8, 11.4 and 45.6 plants/m2 in December 1991. Area 3, situated on an elevated site, presented greater variation in density, with no live plants in December 1989 and 102.2 plants/m2 at the recruitment observed in May 1990. Despite these density fluctuations, the pattern of spatial distribution was always aggregated (Id>1, P<0.05). The greatest Id values occurred in periods of low density and not in those of high density, associated with seedling recruitment. Factors such as high seed production with low dispersal, massive germination in moit years and a comparatively high death rate of seedlings at sites more subject to flooding or more distant from the water table proved themselves able to promote this aggregate pattern and increase it during plant development. |
| first_indexed | 2024-04-12T16:48:35Z |
| format | Article |
| id | doaj.art-06b59b197f5e4a9bb09ae19ba0268322 |
| institution | Directory Open Access Journal |
| issn | 0103-1643 |
| language | English |
| last_indexed | 2024-04-12T16:48:35Z |
| publishDate | 2004-11-01 |
| publisher | Universidade Federal de Santa Catarina |
| record_format | Article |
| series | Biotemas |
| spelling | doaj.art-06b59b197f5e4a9bb09ae19ba02683222022-12-22T03:24:29ZengUniversidade Federal de Santa CatarinaBiotemas0103-16432004-11-011722745Population ecology of Paepalanthus polyanthus (Bong.) Kunth: temporal variation in the pattern of spatial distributionTânia Tarabini CastellaniKarla Zanenga SchererThe temporal variation in density and pattern of spatial distribution of Paepalanthus polyanthus (BONG.) Kunth (Eriocaulaceae) were evaluated at a determinate sand dune. This study was carried out over a period of five years, at three permanent plots of 25m2 in a sand dune slack at Joaquina Beach, Florianópolis, SC, Brazil. There were strong density fluctuations throughout these years. In areas 1, 2 and 3, the densities changed from 10.4, 2.2 and 1.8 plants/m2 in December 1986 to 75.8, 11.4 and 45.6 plants/m2 in December 1991. Area 3, situated on an elevated site, presented greater variation in density, with no live plants in December 1989 and 102.2 plants/m2 at the recruitment observed in May 1990. Despite these density fluctuations, the pattern of spatial distribution was always aggregated (Id>1, P<0.05). The greatest Id values occurred in periods of low density and not in those of high density, associated with seedling recruitment. Factors such as high seed production with low dispersal, massive germination in moit years and a comparatively high death rate of seedlings at sites more subject to flooding or more distant from the water table proved themselves able to promote this aggregate pattern and increase it during plant development.http://www.biotemas.ufsc.br/volumes/pdf/volume172/a2.pdfPaepalanthus polyanthusspatial pattern distributionsand dune slackmonocarpic plant |
| spellingShingle | Tânia Tarabini Castellani Karla Zanenga Scherer Population ecology of Paepalanthus polyanthus (Bong.) Kunth: temporal variation in the pattern of spatial distribution Biotemas Paepalanthus polyanthus spatial pattern distribution sand dune slack monocarpic plant |
| title | Population ecology of Paepalanthus polyanthus (Bong.) Kunth: temporal variation in the pattern of spatial distribution |
| title_full | Population ecology of Paepalanthus polyanthus (Bong.) Kunth: temporal variation in the pattern of spatial distribution |
| title_fullStr | Population ecology of Paepalanthus polyanthus (Bong.) Kunth: temporal variation in the pattern of spatial distribution |
| title_full_unstemmed | Population ecology of Paepalanthus polyanthus (Bong.) Kunth: temporal variation in the pattern of spatial distribution |
| title_short | Population ecology of Paepalanthus polyanthus (Bong.) Kunth: temporal variation in the pattern of spatial distribution |
| title_sort | population ecology of paepalanthus polyanthus bong kunth temporal variation in the pattern of spatial distribution |
| topic | Paepalanthus polyanthus spatial pattern distribution sand dune slack monocarpic plant |
| url | http://www.biotemas.ufsc.br/volumes/pdf/volume172/a2.pdf |
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